An equation for the depreciation of a car is given by y=A(1-r)^t, where y= current value of the car a= original cost. the rate of depreciation is 10%. Approximately how old is the car?

Astore sells two types of radios. one type sells $87 and the other for $119. if 25 were sold and the sales were $2495, how many of the $87 radios were sold a) 5 b) 20 c) 15 d)10

Atriangle has an area of 72 square inches. if the base of the triangle has a length of 18 inches, what is the height of the triangle? use the formula for the area of a triangle: area = (base)(height) type a numerical answer in the space provided. do not include the units or spaces in your answer.

Write the expression 7x^3-28xy^2 as the product of 3 factors